Add support SiS based XGI chips to SiS DRM.

This adds support for some of the XGI Volari family that are based on the
SiS.

Signed-off-by: Dave Airlie <airlied@linux.ie>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/drivers/char/drm/drm_pciids.h b/drivers/char/drm/drm_pciids.h
index aa63350..30b200b 100644
--- a/drivers/char/drm/drm_pciids.h
+++ b/drivers/char/drm/drm_pciids.h
@@ -219,6 +219,8 @@
 	{0x1039, 0x6300, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0}, \
 	{0x1039, 0x6330, PCI_ANY_ID, PCI_ANY_ID, 0, 0, SIS_CHIP_315}, \
 	{0x1039, 0x7300, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0}, \
+	{0x18CA, 0x0040, PCI_ANY_ID, PCI_ANY_ID, 0, 0, SIS_CHIP_315}, \
+	{0x18CA, 0x0042, PCI_ANY_ID, PCI_ANY_ID, 0, 0, SIS_CHIP_315}, \
 	{0, 0, 0}
 
 #define tdfx_PCI_IDS \